Bilby steel tower for triangulation
By: by Jasper S. Bilby.
Contributors: U.S. Coast and Geodetic Survey.
Series: Special publication -- no. 158; Special publication (U.S. Coast and Geodetic Survey) -- no. 158.
Publisher: U.S. G.P.O.
Published: 1929
Place of publication: Washington, D.C
Language: eng
Number of pages: 23
Subjects: Triangulation signal towers
Notes: At head of title: U.S. Dept. of Commerce. R.P. Lamont, secretary.  Coast and Geodetic Survey. R.S. Patton, director.